Submit Hint Search The Forums LinksStatsPollsHeadlinesRSS
14,000 hints and counting!

A possible solution to a wake from sleep problem System
Along with many other users, I have been experiencing problems with my PowerBook not waking properly from sleep. This only occurred when the PowerBook went to sleep automatically after the specified idle time. It worked just fine when forced to sleep.

After much looking, I finally found the solution. I had specified an automatic logout interval of 60 minutes in the Security preferences panel. This automatic logout seems to conflict with the automatic sleep. When I disabled the automatic logout, all of my problems have gone away.

After sitting idle, the PowerBook can start the screen saver (set in the Desktop & Screen Saver preferences), turn off the display (set in the Energy Saver preferences), put the computer to sleep (set in the Energy Saver preferences), and/or log out the user (set in the Security preferences). There seems to be a conflict between the sleep and log out functions.
    •    
  • Currently 3.33 / 5
  You rated: 5 / 5 (3 votes cast)
 
[12,096 views]  

A possible solution to a wake from sleep problem | 4 comments | Create New Account
Click here to return to the 'A possible solution to a wake from sleep problem' hint
The following comments are owned by whoever posted them. This site is not responsible for what they say.
A possible solution to a wake from sleep problem
Authored by: bdog on Aug 16, '05 12:10:24PM

You can try this. (instead of Apple's option to auto logout)

http://www.macupdate.com/info.php/id/15090

I haven't tested it at all though...



[ Reply to This | # ]
A possible solution to a wake from sleep problem
Authored by: sillium on Aug 16, '05 02:05:34PM

Since 10.4 (currently 10.4.2) my PowerBook doesn't go to sleep after the amount of time I've set in "Energy Saving" preferences. It turns off the display (after lowering the brightness) but won't go to sleep mode. Anyone else having this problem or even a solution?
I tried to switch to another user account (freshly created) with no startup item and therefore no programm running in background. But logged into that account, the PB won't go to sleep either.



[ Reply to This | # ]
A possible solution to a wake from sleep problem
Authored by: ipearx on Aug 16, '05 06:02:17PM
My 17" PowerBook had the "blank screen, frozen, but with caps lock and num lock lights still working" type freezing.

Here are some of the solutions I have found on the net:
1) reset pram and nvram (this seemed to help for a while, but the problem would always come back, especially after system updates)
2) reset turn off wireless before sleeping (I found this worked for a bit, and I could reliably wake from sleep without it on, and reliably freeze when wireless was on)
3) turn on/off bluetooth and change "allow bluetooth to wake" settings
4) reset the energy saver preferences
5) change the "go to sleep settings" to never, and only sleep manually
6) only put the computer to sleep with the apple menu (or power button panel) and don't simply close the lid (this also seemed to work for me for a bit)

My freezes were only occasional (once every three days), sometimes more often than that. What I noticed is it started getting more and more frequent, and I also started getting other freezes happening.

The problem? Bad RAM - I bought a cheap 1GB chip from Other World Computing. I took it out, all problems went away. Sent it back, got a replacement. Haven't had an issue since.

BTW, OWC were really great. Only 10 days to replace the bad chip from New Zealand. All the other RAM I have had from there (3 chips) has been fine.

[ Reply to This | # ]
A possible solution to a wake from sleep problem
Authored by: bdog on Aug 16, '05 10:21:46PM

Very good list of troubleshooting steps, however you missed a big one. Reset PMU. Since we are talking about sleep, PMU could have a big impact...

I've never had issues with sleep since I started using OS X (X.2 days). Of course OS 9 was horrible with sleep/wakup. OS X's sleep is rock solid, for me at least. I've had my computer crashed, but it would still sleep and wake. (closing lid, as any clicking didn't happen as it was crashed)



[ Reply to This | # ]